Dough-forming machine



G. H. PETRI.

DOUGH FORMING MACHlNE.

APPLlcATloN FILED GCT. 25, |917.

Emma om 19,192o.`

4 SHEETS-SHEET l.

G. H. PETRI.

DOUGH` FORMING MACHINE. APPLICATION FILED bc. 25, 1917.

1,355,908, .Patented 0ct.19,1.920.

4 SHEETS-SHEET 2.

G. H. PEm.

DOUGH FOHMING MACHINE.'

i K APPLICATION FILED OCT. 25, 19H.

1,355,908, 4 Patented Oct. 19, 1920.

4 SHEETS-SHEET 3.

MMS

20 7 I NVE/VTM? [Ia/v THU; H. P5779/ -G. H. PETRI.

nouGH FORMING MACHINE.

APPLICTION FILED OCT. 25, 19H.

Patnted Oct. 19, 1920.

4 SHEETS-SHEET 4l //v VEN TOF?, 2f/v THE/sf b. P5779/ A Tri/.s

y trcatr e EERI, 0F ERGOKLINE, MASSACHUSETTS, ASSIGNOR T0 PETRI AND TUNES CG'FANY, MASSACHUSETTS.

inc.,

OF BOSTON, MASSACHUSETTS, A CORPORATION OF DOUGr-FORMING MACHINE.

specification of Letters Patent.

Patented Oct. 19, 1920.V

Application file October 25, 1917. Serial No. 198,536.

To mit @n.71- om #may cof/acera.'

it Yirnown that l, GUN'riinn H. Pn'rRr, a cltif/en of the United `itates,,residing at lrooh'line, in the county of Norfolk and 'tate of lifiassachusetts, have linvented new Machines, specification.

y his invention relates to improvements' in dough forming machines. More particu- Vif' it relates to apparatus lfor forming dough into shape for making crescent rolls, sticks, French bread and the like, in :which sheet of dough is rolled upon itself and so curled or wound into the form of a cli; For crescent rolls such a stick is made with the bulging middle portion, vering toward the ends, and can then be it into the crescent shape by hand as the workman piclrs it up to lay on baking pans, or otherwise. lt is the objectr of the invenof which the following is a alt tion to provide apparatus. which will take aA ball disk of dough substantially. as comf from between proof boards and convert into the stick form specified. It is also the object of the invention to provide the "ons automatic actions and vmechanical cents that are incidental to attaining un. purpose.v with means for adjusting them l means for conveniently moving the app fetus about the Shop for use in different localities, held a tray to receive the productr when in use and to reduce into less space when not in use, by pushingV in of the tray holder. rlhe balls of dough which come the rounding machine undergo a specialv Tirepara tory treatment incidental to the l1t by the winning mechanism. This deforms them somewhat by liattening and renders their opposite sides respectively adhesive and no-nadhesive, in a relative sense. Y rioting upon dough thus prepared, the mechanism engages one edge of the disk and draws out the mass, thinning it to a prede- ''aiuined degree, winding the dough upon itself in spiral form, and delivering it thus rolled together, Variations may be made in the specific design and arrangement of mechanism shown without departing from the scope of the invention.' It is intended that .the patent shall cover by suitable expression in the appended claims whatever features of patentabie novelty exist in the invention disclosed. In the accompanying drawings, which may be regarded as ex- ;-il useful improvements in Dough-FormA pressing'a'preferred form of embodiment of the invention:

Figure l. is a side elevation showing the winding machine as a whole, without the said device for preparatory treatment; Y

Fig. 2 is a plan of the same; f

Fig. 3 is side elevation of the top of the machine, on a larger scale and in section on the line 3--8 of Fig. 2;

Fig. 4: is a side eievation showing certain details on a still larger scale, as if in section on the line Lgf-4; of Fig. but with the positions of the cutaway rolls represented as if the rolls were present;

Figo is a front elevation of the same in .section on the line 5 5 of Fig. 4;;

Fig. 6 is a front elevation of a detail of Fig. .42 in section on the line 6-7-6, enlarged;

Fig. 7 is a rear elevation of the top of the machine, in section on the line 7 7 of Fig. 3;

'if 8 is a side elevation of a modified detail of certain of the adjusting mechanism; i

Fig. 9 is a diagrammatic representation of 'working parts of the machine; and

Fig. l() is somewhat diagrammatic repre sentation of apparatus employed in preparing dough for action Aof the machine, in v 'ch for clearness the relative thickness of certain parts is exaggerated. 1

in ,the drawings a supporting framework is seen, consisting of a pair of iron pillows 1G, one at each side, joined by transverse tie rods 10. which pillows elevate the mechanism a little above the shelf or top 1l of the table whose top framework l2 is supported by legs 13, the whole being a support for the dough forming mechanism hereinafter to be described. 'lt one feature that the mechanism is readily transportable about a shop, notwithstanding its weight, so that itv can be used close at hand to where the supply is or close to where its product is wanted, being oved one place to another at will. To that end a pair of wheels le are provided, eaCh at the base of one of the legs, having l L heries tangent to the planewhich passes tirough the bottom ends of the legs i", and having their treads whcre'contact with the floor is made in a line outside of the area delimited by the four llegs although close to one pair of them. Cooperating with these and located. inthe top frame 12 on the side remote from the wheels are two rods l5,

one at each side of the machine, passing horizontally through holes therein, slidable horizontally in said holes and joined at their outer ends by a cross bar 16. The bar 16 is preferably integral with the Vtwo side rods 15, thus keeping them rigidly in parallelism to each other and serving as a handle for pushing them both in together Aor pulling them out together through the holes in the frame 12. WVhen pushed in these partsoccup 1 the positions illustrated in Figs. 1 and 2. lhey can be drawn out from the frame, toward the left in those gures, until stopped by the lugs 17 and when so drawn out they with the frame of the machine constitute a4 lever having a relatively long arm from the bar 16 to the place where the wheels 14 make Contact with the floor as a fulcrum,

long enough so that a man is able thereby to lift the whole apparatus, it swinging about the fulcrum at the tread of wheels 14 and thus causing the bottom ends of legs 13 to clear the iioor, even those legs which are close to the wheels. ln this relation it can be trundled on wheels 14 to any desired position. When put down however, it stands firmly on the four legs 13. The lever arm can be put out of the way if desired by pushing the part 16 in toward the machine, with the rods 15 slidin gY in under the machine into the frame 12. 0n theother hand, for some uses of the machine it isdesired to have a shelf at this end, which is herein called the front ofthe machine, particularly for holding a tray to receive a product of the machine. ln such casesl the parts 15, 16, 15, when left extended, serve as a shelf for holding such a tray.

fin order further that the machine may be self-contained and portable to rvarious parts of the shop, an elec ic motor 1.8 which has a sv-Iitch i9, with suitable electrical connections notl shown is illustrated as mounted under the 'frame 12, connected by a driving `belt to a pulley 26 whence by another pulley and belt power is transmitted with reduction of speed to the pulley'20, which is the local driving wheel of the apparatus next to be described. f

The winding mechanism comprises an adjustable arrangement of rolls, bands and incideiital appliances which are perhaps best seen in. 3, reference being iirst made to Fie. 1 'for the driving connections. On the shaft with the driving pulley 20 spur gear 21. This meshes with a spur gear 22 which, being larger, provides for still Afuri ther reduction of speed from the original source of power, and which as seen in F 7 hasra bearing in side members 3() of the adjacent partV of the machine frame. This gear. 22 is on the same shaft with a' roll 23, extending across the machine and having` a smooth metalsurface adapted to engage the dough, and having at its farther end a gear 24 Whose cogs, as seen in Fig. 3, engage the cogs 25 through which all of the other mechanism about roll 23 and also that above it is driven; and also engage an idler gear 2T which, meshing with gear 23,drives roll 29 and actuates other meehanismto the right. The shaft 25, carries theV smooth metal roll 26, and it extends outboard at the farther side of the machine and there carries a sprocket wheel driving a chain 41 which meshes in a sprocket wheel 42 in the forward part of the machine on the shaft l43 which carries a roll.44 covered with sandpaper 45 and adapted to engage and drive a canvas belt or endless band 44l which passes around the roll 44 and. goes thence backward and upward at an incline of aboutr30Q to and around a guide rod 44 of rather small radius of curvature,

adjustably located rather close to the fer- Y ward sideof roll 26,V as well seen in Figs. 3 and 9.V This Vband is substantially as broad as the rolls are long. The guide rbd 44 is parallel to the surface of the roll 26,

and' far enough from it for the sheet ofV dough hereinafter described to pass betweenv it andthe roll 26 without touching it. The

direction of motion of the band, as driven by the roller 44 -and sprocketchain 41 is such that, when the forward side of the roll 'backward toward the roll 26.7VV On thenear end of the shaft 25, being the portion removed in Fig, 3 but seen in Fig. 1, a gear 25 drives an idler 46 above it which drives a gear 47 'on shaft 48 carrying Y is coated with sandpaper around which passes another endless band 34,which also goes around an idler rell 34 and is subject tothe action of a tension roll 34 This band is preferably made of felt, is of substantially the same width as roll 26 and the under side of roll 34 is so closely adjacent to it, that dough cannot pass between it and the roll 26. At the line where they so situated. thatrthis roll causes the band 34 to cover about two-thirds or `more of the circumference of the roll 34. 'At its forward end these side plates have ears 34, (Fig. 2) through which pass screws 34e, proroll 34, whichV lll)l iso jecting from said bearing blocks through the ears and carrying nuts on the outside. By means of these nuts the screws can be drawn upward, thus drawing,` the bearing blocks upward, and so drawing,` the roll 3a and. making the belt 34 tighter.

The .Wear 25 also drives a gear 50 on the sha-rt that bears the smooth metal roll 32, thus causing that roll, which is to therear of and about level with the roll to turn in the direction shown by a arrows in Figs. 3 and 9, with adjacent parts of rolls 26 and 32 moving the same way. Another roll, 33, of smooth metal, is located below the roll 26 and slightly forward of it, its gear through which it is driven being in mesh with the gear on shaft 25.

The rolls 32, 23 and 33 are arranged in succession around roll 26 at a little distance from it, according to the thiclrness which the dough is to have previous to its being rolled. into stiel: form, and all preferably have smooth metal surfaces. llhe belt all is preferably of canvas. The belt 34 is preferably of felt. The roll 29 is preferably covered with mohair plush or equivalent material having' a pile. A drag'plate 29 is lined so that its edge dips a little below the surface of the pile of the plush, pointing` in the direction in which the roll moves as seen clearlyin Fig. 9, thus constituting;` a, pile retractor. The' rolls 23 and 33 have scraper plates 23 and 33, bearing upon their undersides, respectively, and pointing` backward against the direction of rotation of those rolls. Dough which has been reduced to a certain thickness by passir'igr between roll 26 and rolls 32, 23 and 33 can pass between the roll 26 and canvas belt 44C provided it adheres to the roll 26; but the belt 34 is close enough to roll 26 so that no dough on roll 26 can pass it. lt therefore is stripped from the top of roll 26 and is carried forward in themachine by the forward moving,- underside of belt 3a. As it bends over forward it encounters the rear` wardly moving upper side of canvas belt 4244!, and is then subject to the action of both belts, the upper tending to carry it forward and the under tending,` to carry it backward.

(fo-acting,` with this arrangement of belts and' rolls are other features of importance affecting` their action upon the dough. Certain of these are illustrated in Fig. l() where masses of dough 60 are represented piled in layr separated. by trays having certain peculiar characteristics.` rllhese trays may be mfle of various materials, but are illust ited as made of wood 6l` with a lining` of belt or canvas 52 on one side and of tin on other side. While they may be any convenient or suitable size I have und dimensions of about 13 by 24 or 18 by inches convenient, each tray of this size being capable of holding three dozen balls .rounding more or less according to size of of dough as theycome from the machine of suitable size for crescent rolls. Lall of the trays are'arrangged with their tin sides bare and their felt sides well dusted with flour and facing` the same way, preferably upward, but whether up or down being-g1 really immaterial so longas they all face alike. lllhen a stach of suitable height, for example, alternate balls and trays about five to ten trays deep, has been completed and has been left for short time, the balls flatten out owing to their autogenous pressure, and profiting of the dough. During` half of the ,time the pile isinverted so that the pressure upon all of the balls is equalized over the whole period. lin. the particular which is being described the resulting thickness' is preferably about of of dough each ball Van inch, making,l oval disks ot dough three inches more or less in diameter, according to weight of each piece of dough. 'llhe result of the operation is not onlyV the deforming of the balls by flattening` them by-static pressure, described, but the provision of a dry surface and a wet surface on each Or.) faces against which the dry and non-adho sive side of the dough is presented, which was in the stach against the fe t (52. (lenses quently, when the operator talcs in hand one of the dough dislrs 60 and, with his hands at one edge of it, holding with his Fingers, inserts the 'opposite edge between the rolls 26 and 32 with the sticky sidey against the roll 261 lthe dough is drawn forward by those rolls and adheres to the roll 26 aft r passing between the two, and also adheres to the rollv2`6 afterpassing between it and the roll 23, and vstill adheres to the roll 26 after passing` between it and the roll This is owing to the non-adhesive character of the side which is presented to the rolls 32, 23, 33, and the non-adhesive character of the surfaces of those rolls. This result is brought about as follows: ln and of themselves said rolls may be no different from the roll 26, all having smooth polished metal surfaces, but the roll 29 and its mohair plush surface and the drag plate 29 thereon cooperate with a feeding hopper 29 containing` iiour to maintain the non-ad. hesive condition of the rolls which surround the roll 2Gx rilhe hopper 29 is arranwed at an incline toward the roll 29, which forms and non-adhesive, and thaty ico llO

Y a bottomv for it, and as the roll moves in the Both oi the rolls last mentioned direction ci? the arrow, flour is picked up trom the mass as seen in Fig. 3 and carried along on the pile ot the plush. [is successive portions of Ithis plush roll pass'the drag plate 29 the individual hairs of the plush pile are bent backward by that plate, until they pass its edge when by Vtheir inherent elasticity they spring` orward. ln the sudden motion ot spi-ii ging 'forward tlour picked up from the mass and carried on the hairs and in the intersthes between them is snapp ld oil and is thrown 'iorward in a fine spray upon the rolls 255 and idoine o? that which strikes roll 3 yis i trans'lorred to rol 32 in passing se two are nearly tangent to each loir surfaces moving in opposite s. `auch as thus acquired by the and such as r eins on the roll 26 e adhesion o16 do h to the roll 26 'ely so much stronger Uaan its adhesion c -oils 32 and 26 that the dough tollows arouiul Von the surface oi the roll 26 and leaves the other two. The 'flour thus de` posited on the outer surface oi2 the dough is suticient to pi rer-,t adhesion to the roll are lept clean from any considerable adhesion oit particlesv ci? dough by scrapers respectively marked ,8 and The 'former as seen in Fig. i3 is mounted rigidly on a square Vrod 23 extending across the machine parallel to the roll. it the ends or' this rod are pintles, on which the scraper' can be ad` justedby a set screw 26 holdin it. The

scraper 33 is mounted on a lever-line swinging lrame 38 pivoted at each side at 3l the scraper being at one end oi the arm ot the lever and the other end of the 'trame beyond the tulcrum 33 having a suiicient weight of metal as seen in 3. rEhe posi tion the roll being movable, as hereinatte/r explainer, the weight d lever support for the scraper 33 permits that scraper to bear automatically upon the surface or". the roll whatever be its position oil ad- `justment.Y The continuity of feed of flour tothe plush surface 29 is insured by an arrangement illlistrated in part in Fig. 8 and in part in Fig. consisting of the spring 60', a camdilre arrangement oi2 one side 29 of the hopper and a pin 61 on the roll 29 and adapted Vto engage this cam side of the hopper. During the course of each rotation the pin 6l rises beside the tlaring side of the hopper as seen in Fig. 7, clearing the. bottom portion oi the side but rubbing against the upper portion and displacinw the hopper sidewise a little tipping it toward the right in 7, away from the eye in 3, until the pin G1 has ridden past theside 29. whereupon the i hopper snaps bach under influence of the spring 60. There should be a pin 61at each side of the hopper,

set on opposite sides of theroll 29 so that the snap-bach occurs alternately in opposite directions. rlhus at each rotation of the roll 29 the hopper' is violently jarred so that flour is shaken down along its inclined surface to the plush 29 where it is unvaryingly picked 'up by the pile so as to be snapped off by the drag plate 29, and sprayed.

lt is one V'lkaature of Vthe invention that the "fr ce oi the roll 33 from the roll 26 can be n dusted so as to handle masses oli' dough of different sizes and of different thicl ncsses, according to the purpose or desire oi',l the baker. Cfne 'ai'.rangement of. these solls is illustrated in vFig. 4, although 'for the small sized crescent rolls, whose manufac- 'fu e is particularly being here described, or tor some other varieties plastic material the rolls need not be as widely separated as there portrayed. Ordinarily no' occasion exists 'tor making any difference in the relative positions o1 rolls 32 and 26 and 28-which periorn ya preliminary operationv of thinning the dough; but means is provided for regulating the final thickness of the dough as determined by the distance apartv of the surfaces ot rolls 33 and 26. VThis consists in provision for moving the roll 33. As illustrated in F 4 and 5, ahandle 65 is provided pivoted to the frame at 66 and capable oit a slight movement about said pivot which brings the roll 33 toward or Vfrom the roll 26. The handle 65 may be fastened in either of several positions by a screw 63" mich' may be inserted through either ot the holes 68 in the handle into either of corresponding holes 69 in the frame oi this part of the machine. Vhen so inserted this screw and the pivot 66 hold the handle 65 and thus determinethe position of the hearing TO o' the roll 33. ing is a bushing` inY which the shaft of the turns, the bushing being rigid in relaroll 251e tion to the handle 65 andV movable thereon within a slot 71 in the side frame of the machine seen infFig. 4. Upon removal of the pivot screw 66 and the screw 67, and removal of the handle and bushing 65 and 70 by drawing them to the'left in Fig. 5,V the shaft carrying the roll 33 can be slipped out sidewise oit the roll, toward the front of the machine, through the slot 71 as seen in F ig. 4. Notwithstanding the fact that the adjusting movement of the gear driving the roll 33 is not about the center olif the gear on'shaiit 25 with which kit is in mesh, the requisite niovement is so slight that it works Ystis'factorily ineither of its adjusted posi tions; and consequently the roll 33 thus determines the thickness of the sheet of dough which .is to be wound upon itself to form the spiral of the crescent roll. Provision is also made tor adjustmnet of the positions oi' the canvas belt 44 and the felt belt'34. former, 44', at its inmost reach must be far Said bear- TheV loo

' the left they tighten it.

'upper portion enough away from the roll 26 so that a sheet of dough clinging to the surface of the roll 26, and of thickness determined by the positionof roll 3?, can pass it without touching it. This adjustment is effected by providing for swinging the frame on which the band 44 is carried. The shaft 43, which carries the driving roll of this belt,` has a bushing 8l at each end. Side plates 48 with holes into which the bushings fit loosely extend thence upward to the cross rod 44, which. joins their upper ends. Thus a rectangular' frame is formed consisting of the side plates joined at their pointed upper ends vby the rod 4U and at their broader lower ends by the shaft 43, and able to swing pivotally' somewhat around the bushing within which the shaft 43 turns. In an ordinary machine, this swinging need only be so that the rod 44 may be set in varying proximity to the roll 26 or to` the felt band 34. A screw 72 adjustable on each side plate 43 and engaging a stationary part 73 on the side frame of the machine determines the elevation at which the side plates 43 andtherefore the cross rod 44 stand, when the screws are resting down on their supports 73 by gravity. Means is provided for tight-k the canvas belt 44 consisting of a subframe having sine plates 74 pivoted to the main side plates 43 at 75, Fig. 3, at a posi-Y tion not in the line of the belt and adjustable as swung about said pivot by an adjusting screw 76 on said sub-frame engaging between it and said side plate 43. This sub-frame carries two small rods, 74, plainly seen in Fig. 3, which engage the canvas band on opposite sides so that when they are swung to the right in Fig. 3 they loosen the tension of the band and when swung to This adjustment is effected to any vdesired degree by means of the screws 76. frame 43, 44, is supported plate 77 close un der the top reach of the belt 44 affording a firm support for that part of its surface which is just below the rod 44" so that this belt does not sag appreciably while dough is being rolled thereon. Covering the lower art of this frame and of the top reach of the belt 44 is a plate 78, hung on a cross rod by a hook 79 and having a ledge 80 to receive the finished rolls of dough. The of the plate 78 serves to separate the descending roll of dough from the upwardly moving belt 44 and to substitute Vto receive the shaft, fitting endwise into' for it a smooth incline down which the roll may roll after being made on the upper part of the belt 44. The bushingsjSl in which shaft 43 is mounted are similar to those which are fully illustrated in Figs.` 4 and 6 with respect to the shaft 48. They consist of cylindrical pieces axially bored holes through the side frame lout having /Vithin this movable to enter, and held xed in place by set screws 83. To remove the shaft it is only necessary to loosen the set screw 83, pull the bushing out endwise, and then to extract the shaft7 sidewise with respect to theV square plates of metal, the shape of which is best seen in Figs. l, 2 and 3, adapted to bear against a ledge 86 on the frame and set eccentrically as clearly seen in'Fig. 1. The plate is rotatable about the axis of a clamping thumb screw 87 to put either of its four edges downward, each` edge being at a different distance from theV axis. Janother way of accomplishing this same result is illustrated in Fig. 8r where the part 85 serves the function of the simpler shaped part '85 of Figs.. l and i 3. Extending hrongh the frame holding belt 34 from one side to the other is a plate 88 which serves the double purpose of stiffening the frame and'of providing a backing forthe under part of the belt 34 incase that belt should be too slack when the roll of dough is forming under it. Bound posts 89 serve to guide this belt and hold it within the proper limits. The adjustment of the eccentric side supe ports nr85 fixes the distance of the belt 54 from the belt 44 but does not affect the distance of the belt from the surface of roll 26 as the movement in adjusting it is about the axis of roll 34.. This distance is fixed so that the felt belt 34 passes always close enough tothe roll 26 to draw therefrom any sheet of dough which is adheringthereto. lt does this with greater readiness and certainty because ofthe supcriorly adhesive character of its felt surface as compared with the smooth surface of J-fhc roll 26 to which the dough has been adhering by virtue of the relative stickiness of the side of the roll which is toward that roll as compared with the side which is toward the rolls 32, 23 and 33. When the dough is stripped from the roll 26 and carried forward by the felt belt 34 its drooping head rubs against the backward moving canvas belt 44 underneath it; butithe former works on its sticky side and is of superior adhesive characteristic while the latter works more or less on its floured and dry side and is also of inferior adhesive power. The proximity of the belts to each other is such that the leading end of each sheet of dough is pulled forward on top and backward underneath producing a rolling action with the outward partly knurled flanged headsk 82 too large y lto draw the leading part forward.'

Vof the roll Q6 and olf the thinned siii-tace 65 rolling predominating. The belt 34 moves materially faster than the roll 26, as seen by the gearing in F ig. l, and the belt 44 also moves faster, sothat the dough is perfectly cleared away from the space between the two belts and the roll 26, and is itself formed into a roll because its retarded underside is carried relatively backward and engages the forward moving Vadjacent part of the dough sheet and is carried forward,

ward more or less and thus encircles moreV of the dough, while still resting down on the ledgeS; and in case the size of the dough roll :is sufficient itrcan easily rise above that, swinging upward as above described about the axis of roll 34, and falling again as soon as the dough roll has passed out. The relatively greater adhesive power of the felt surface than'the canvas helps in this action, particularly in starting the winding or rolling` action', and by preventing the dough from being carried back or down too much where the latter goesy down from rod 44'; andthe movement of the under belt back ward delays the forward travel of the roll ot' dough that is being' formed. Y

In the general operation of the machine the rolls rotate in the various directions indicated in Fig. 9. The workman, takinga flattened ballloit' dough from' one oit' the trays on which it has been deformed by autogenous pressure as indicated .in Fig.V l0, inserts one edge ot the disk ot dough ba tween the rolls 26 andln. Holding ha the body of the disk he allows theinachine lncidentall'y it is de'liorined further, being thinned according to the distance o'lg the roll 26 'from rolls 32, :23, and 38; and being drawn out to somewhat of a pear shape by the retention of holdof the workmans fingers on. one edge,V Adherence oi" the dough to roll 26 is aided. by the flour spraying action of theV dragr on the plush pile, which keeps its outer surface nonadhesive while its inner surface 1s adhesive because oil: the non-dryingr effect which lpreceded it in contact with this side of the -doughf/ Next Ythe dough is striiaped .trom the roll 26 bythe superiorly adhesive rfelt belt 34 and is rolled'and pulled :llor

the con. iiiuous state other means provided to receive it. Meanwhile flour is kept abundantly supplied to y the roll 29 by the lateral jarringv ot the hopper 29", by alternate action of pin 6l on the cani-like side of the hopper and o;

Vthe snapping back action oiu the spring 60.

The process in rwhich the described .mechanism plays a part has the important characteristic that theV dough is made Vto adhere to the central roll. as a carrier,it having been customary heretofore for dough handling mechanism to be prepared with scraperi., and the dough itself, by dusting, so that the dough does not adhere to a roll on either side. ln the present case theadhesion provided by making' the surface of the dough somewhat wet which is'to come into contact with vthe central er carrierroll ,f and this accomplished automatically, ether with a `crtain 'refinement of the texi Lie and a 11e-c. I shape, by the simple process el sta l. dough in a certain way when it comes the divider or from the rounding mael'ii th e iin

dusted canvas of a tray, are covereil L a tray laid upon. them with its tanned side is beingmade sweats'ligainsi it liecoines li i. because upon it: and'its grain bec/unes iin i. pressure keeps Vthe bub-` bles small. llhev` Y and the lapse oi:- tlnie while the stack is Vbein..L 'piled is sufricient to complete the process is regards the bottoni layer. The stack can be iminedif lie-c ately'turnediover and thepassing ot the draw or delay the dough, but have a` thin# nine` and spreading ell'e'ct upon vthe dough.

disks'. Theniimber of turns in the curling an controlled. somewhatby the w0rk` mail. Holding nl@ @ae/mf ai@ askin his fingers a longer or shorter time causes it'to be strung'. out more or. less'. The stack ot trays between which the dough disks areV forni-ed may rest on the frame l5, 16, when drawn out, yand thatV frame may be used as' a lever i'or raising the whole mach' Y Trie' to inlove it and its loe d, on Vwheels 14, from the vicinity of the dividing machine to the place where the curled rolls'ai'e wanted.

ping of tliedough freni ball te disk are sii'fl'icient to producetlieeeYV ioo.

ilo

l claim as my invention l. Apparatus for working on plastic material including,1 two moving to curl and roll a sheet ofi the material between them; one of'said belts being arranged i i adapted to engage the leading edge oi the sheet and to bend it over into contact with the second belt and to roll it ther on away from the place of engagement; and the said second belt moving less rapidly and in the opposite direction to a point close to said place ci engagement.

9'. Apparatus lor working,` on plastic maiiicluding two moving belts adapted to curl and roll a sheet oi: the material between themg one ot said belts being arra d and adapted tov engage the leading edge of the sheet and to bend it over into contact with the second belt and to roll itv thereon from the place oi engagement; and the saidsecond belt moving less rapidly and iii the opposite direction to a point close to said place of engagement; one of said belts being` unyielding and the other yielding); as tire roll grows in size.

3. Apparatus for working on plastic material including' two moving belts adapted to curl and roll a sheet of the material between them: one of said belts havingr a surrgan'e the leading edge of the sheet and to bend it over into contact with the second belt and to roll it thereon away from the place of engagement; and the said second belt having; a surface adapted to adhere less readily to the material and moving; less rapidly and the opposite direction to a point close to said place of engagement.

el. .lpparatus for working on plastic mateA including` two movinpg belts adapted to curl and roll a sheet of the material between them; one of said belts being oi felt an arranged and adapted to engage the leading edge ot' the sheet and to bend itk over into Contact with the second belt and to roll it thereon away from the place of eniasement: and the said second belt being of canvas and moving less rapidly and inthe opposite direction to a point close to said place of engagement.

,apparatus for handling plastic material, havin@` in combination rolls for comi.,ressing" a lump to sheet form, and means continuously operative to render the rolls on one side of the sheet non-adhesive.

6. Apparatus for handling plastic material, having in combination rolls for compressing' a lump to sheet form, and means continuously operative to render the rolls on side ot the sheet non-adhesive, cone' of a hopper for holding a powder; having a pile surface, turning d a retractor engaging the pile as the cylinder turns, whereby the pile, upon belts adapted rial being arranged andadapted to enrelease from the -retractor, throws powder as a spray.

s for handling plastic matecombination rolls for commp to sheet form, and means rative to render the rolls the sheet non-adhesive comf a hopper adapted to hold a powder, i upg device therein, and means to agithe hopper'.

tipp ratiis for handling plastic matcrial, having in combination rolls for compressing,` a lump to sheet form, and means continuously operative to render the rolls on oneside of the sheet non-adhesive, comprising a hopper, a spraying device therein, elastic means tending to hold the hopper affainst a tired support, and an element p iiodically displacing'the hopper there- :from and suddenly releasing it, whereby it is iarred upon its being returned by said ad plied to thin material passing around tlie li se roll means to revent the material V'fiorini adhering tothe saidsurrounding rolls; a belt passing close to the inner roll and wanted to strip it of material; and a reariling and supporting surface for the ripped material, comprising a belt moving ss rapidly and oppositely as compared with the ifirst mentioned belt, the two belts being adapted to curl and hold the material in compression between them.

lO. Apparatus for workingv on plastic material, comprising a roll; surgfounding rolls adapted to thin material passing around it; two belts with space between them pted to 1cceive material 'from said roll, inclined downward from the'upper part ci said rollpwith the upper belt inovinfgf downward and adapted to strip the material Ytroni said roll and the lower belt moving upward less rapidly.

l1. Apparatus for vworkingY von plastic material, comprising roll; surrounfglingv rolls adapted to thin erial passing around it; and two belts with space between them adapted to receivematerial lrom said roll, inclined downward from the upper part elI said. roll, with the upper belt moving` downward and adapted to strip thematerial from said roll and the lower belt moving upward less rapidly; and guiding pulleys around which said belts travel having sandpaper surlaces :for engaging said belts.

lf2. Apparatus lor working on plastic material, compris' roll; surrounding rolls adapted to thin material, passing around it; means gearing all ot the rollsv `rolls adapted to thin material passingV around it; means gearing all of the rolls together soV that their adiacent surfaces run at a common-speed; means to set the lastY of said suri'ounding rolls at different dis-v tances from the innei` roll, without varying its speed ratio; and means to strip and curl the material lthat has passed between said rolls; the said setting means comprising a pivotally inountedsupport Vfor the arbor or said last of the surrounding rolls and ieans te ix it in diiierent positions about its said pivot, while its gear remains in mesh with its (lriviirg gear. i

14, Apparatus for working on plastic material, comprising means toV thin said material, a belt to curl the said material, and a rollfdriving said belt; combined with a frame for the machine and a bearing for the said vroll removable from said frame in Va direction endwise of the axis; the arbor of said roll being thereafter removable from the frame in' a direction perpendicular to its said axis.

15. Apparatus for working on plastic material, comprising means to thin-saidV material, a belt to c url the said material,

and a roll driving said belt; combined with a frame for the machine ;,bushings set therein, holding the arbor of said roll; andmeans for holding said bushings in place; there being a slot extending from the hole wherein the bushing is set, large enough for extraction of the arbor, but not the bushing; the

aid bushing being removable endwise from said hole and arbor.

16. Apparatus for working on plasticV material, comprising nieansto thin said Inaterial, a belt to curl .the said material, and a roll driving 'said belt; combined with a Vframe for the machine; bushings set therein; holding the arbor of said roll, and means for holding said bushings in place; there being a slot extending fromV the hole wherein the bushing is set, large enough for extraction of the arbor, vbut not the bushing; the said bushing being removable endwise 'from said hole and arbor; an auxiliary frame pivoted on said bushing and extending thence in the direction of travel of said and supporting the remote end thereof, whereby the belt can swing laterally from its general direction of travel, as the material grows in size when curled.

17. Apparatus for working on plastic material, comprising rolls adapted to thin material; a belt for' curling the thinned inaterial; guide rolls and a supporting frame therefor, pivoted at the end where the belt receives material; and a plurality of Struts of difleringlengths fixed together and pivotally mounted for supporting said frame, whereby the initial Vposition oi"A the frame may be predeterminately set at various angles.

18. Apparatus for working on plastic mavterial com arisin` rolls ada ated to thin material; belt for curling the thinned VInaterial; a cooperating oppositely moving belt Yon which the material lies Vwhile being curled; a iframe supporting said oppositely moving belt, having a'driving roll and a guide ci small diameter around which the belt passes,'th`e said guide being between the other belt and the thinning roll; Vand a support holding said guide at a variable distance from said thinning roll, thereV being a frame supporting said guideV and pivoted on the axisrof said drivingrroll.

19. Apparatus for working on Vplastic material, comprising rolls adapted to thin material; a belt for curling the thinned material; aV coperating oppositely moving belt on which the material lies while being GUNTHER rirnfrai, 

